XC40 from base interior to memory seats

[iGeorge3]

Thank you for the feedback.
Indeed, Volvo will block the vehicle, hence why I'm wondering.

I had a quick comparison in the drawings: mainly what I saw is that my seats have direct power going to the lumbar support button, then the button controls the pump directly.
- Airbag/occupant detection/seatbelt: this is not impacted, it's a completely separate wiring from the comfort functions, therefore not a subject here
- Power: same pins for +12V and GND between the two types of seats: mechanical manual and electric/memory seats
- LIN: one extra wire for each seat from the CEM to the seat
Otherwise evrything else is managed "internally" in the seat for motors, heating, ventilation.

There is nothing else for me to prepare, just for the seats to work (other than the coding, of course).

Then there are the memory buttons on the door card: these are connected via 4 wires between the door module and the buttons. It seems there is nothing else to connect between the CEM and the door module, which is good.

For the rear seats, there is indeed a trigger to be connected for the foldable headrests, but, there is also a feedback sensor to be connected to the CEM for the headrest position (I'm guessing for occupant presence to give me a warning that headrest should be properly in place when someone is seated there). but this is not the "urgent" part.

Finally, to avoid being blocked by VOLVO: I see 3 solutions:
- Have one switch to shut off LIN wires before connecting VIDA
- Have one switch to shut off power wires before connecting VIDA
- Have one switch to shut off both LIN and power before connecting VIDA
I guess there is no way to make them update their database with added seat modules?

[iGeorge3]

Quick update, guys:

I got the entire interior, and, it is stupidly clean.
I mean, ignoring the dust due to transport and packing, the front seats are basically new I'd say (see picture below of the seating area of the driver seat).
They also smell new still. Quite surprising for a 2023 car.


About the wiring, 12V is present, GND is present, LIN is potentially present, I wanted to check today but a storm is ongoing in France now, and my garage is already booked with another project car (cute tiny blue 206CC), therefore no possibility to disconnect battery and disconnect the seat connector to check.

However, in case I need to connect anything, I tried finding the Climate Control Module (CCM) in order to wire the LIN, but I can't find anywhere online the location of the CCM on the XC40. Anyone got any idea?
From my understanding, the CCM is the master of the LIN network and everything else, seats included, are slaves.

[iGeorge3]

Ok guys, sorry, spamming my own thread here.

Another quick update: checked my plugs today under the seats, pin 11 on both sides is indeed not tpopulated, therefore LIN is not present for both seats. that means I'll have to wire them up. not a big issue, easy job to do.
I need to know from you guys either of these:

• Any idea where the CCM is on the XC40?
  

or

• Any idea where to find the interconnections circled in red below?
  

Thanks guys!

[iGeorge3]

Hello everyone,

Good news and update - seats are installed and worked (yay!)

Found the CCM: it's just behind the glove box around the blower fan. Quick continuity test between humidty sensor and CCSM confirmed the correct plug and wires. Took wires from the CCM to the seats routing them along the original wiring and then turned on SML, SMR, Electric Memory seat driver and electric passenger, then also heated seat, and it's all working!

Not finished actions: door and dashboard trim illumination, memory seat buttons and foldable rear headrests. I'm waiting on the Delphi/Aptiv connectors to do that.

Another thing is kind of weird: when I get up from the seat and out of the car, the music and heating doesn't stop as it used to do on my previous interior. Could this be a coding issue?
Edit: I checked the connectors and the wiring, it seems like my driver seat doesn't have the Occupant sensor driver seat at all. Weird thing, anyone has any ideas why or how this is possible?
It's supposed to be on pins 22 and 23 of the seat connector, which are populated on my original cloth seats, also populated on the car side of the wiring, but not on the seat connector.
Edit 2: I'm writing as I figure this out. So my "used" seats come from a hybrid, which means there is no need for driver presence mat, as a hybrid has a START button, whereas a BEV doesn't. Therefore, my next job will be to deholster my old seat, deholster my new seats and install the presence sensor on my new seats. Pictures to follow!